Venstar T2900 - Manual (Page 96)

Configuring the Jumpers
ECON
Page 21.2
NEVER PUT MORE THAN
ONE JUMPER ON THE SAME
MISC JUMPER BLOCK!
DOING SO MAY DAMAGE
YOUR THERMOSTAT AND
VOID THE WARRANTY.
MISC3 MISC3
OK
W3
PROG
HUM
DEHUM
MISC3 MISC2 MISC1
Y2
(MISC1
ONLY)
CAUTION
21
HP
GAS
B
O
ELEC GAS
(F AN)
W1
Y1
G
R
C
MISC2
W2
MISC1
RS2
RSGND
MISC3
RS+5
Rs1
W3
HUM
DEHUM
MISC3 MISC2 MISC1
Y2 (MISC1
ONLY)
INSTALL HUMIDITY MODULE WITH SENSING ELEMENT OUTWARD
HUM NO HUM
1 2 4 6 8 X Z
1 5 7 9 Y 3
PROG
CK1
CKGND
ECON
*The Humidity Module (sold separately) must
be installed to operate a humidification
and/or dehumidification system.
For additional flexibility, your thermostat has three configurable
outputs. These outputs are designed to have different functions
depending on how the jumpers are set (below). Each output,
labeled MISC1, MISC2, and MISC3 may be set for one of the five
choices available.
In the diagram below, the MISC3 jumper has been set for HUM*
(humidification) operation, the MISC2 jumper has been set for
DEHUM* (humidification) operation, and the MISC1 jumper has
been set for Y2 (2nd stage cooling) operation.